A differential housing precision acceleration control all-dimensional integrated device

Abstract

This utility model discloses a precision acceleration and control all-dimensional integrated device for differential housing, relating to the field of differential machining. It aims to solve the problem that conventional precision acceleration and control all-dimensional integrated devices for differential housing are difficult to accurately control machining speed and precision during machining, resulting in low factory production efficiency and product quality. The device includes a double-shell positioning frame and a four-axis fixing frame. The double-shell positioning frame includes an upper support plate, with a middle plate and a lower base plate fixedly connected below it. A left half-shell mounting flange is fixedly connected inside the upper support plate on one side of the middle plate, and a movable support plate is located below the left half-shell mounting flange. A right half-shell mounting flange is located on the upper support plate on the other side of the middle plate, and a clamping component is located on the side of the right half-shell mounting flange. The four-axis fixing frame includes a four-axis turntable, with chucks on the turntable for fixing the entire differential. The advantages are: multi-step machining of the differential housing can be performed in a single clamping operation, improving machining efficiency and precision, reducing clamping frequency, and increasing industrial production capacity.

Description

Technical Field

[0001] This utility model relates to the field of differential processing technology, and in particular to a precision acceleration control all-dimensional integrated device for differential housing. Background Technology

[0002] In the automotive manufacturing industry, the differential, as one of the core components of the automotive transmission system, plays a crucial role in the overall performance and operational stability of the vehicle due to the quality of its housing processing.

[0003] However, the machining fixtures commonly found on the market for differential housings currently suffer from numerous design limitations. Most fixtures employ a single-function, split structure, resulting in a cumbersome and fragmented machining process for the differential housing. Specifically, the left and right halves of the differential housing need to be machined sequentially on multiple different machines: first, the longer end is turned on a CNC lathe; then, the shorter end is turned on the same type of machine; next, the inner and outer diameters are precision turned on a CNC lathe; then, the cross pin holes are drilled and bored on a milling and turning machine; finally, drilling and tapping are performed on a machining center. This fragmented machining process requires multiple clamping operations. Operators not only spend a significant amount of time tightening and adjusting bolts and nuts during clamping, resulting in extremely low clamping efficiency, but also face challenges in ensuring consistent positional accuracy during each clamping operation due to human error. Deviations in positional accuracy directly lead to accumulated errors in subsequent machining processes, ultimately affecting the final machining accuracy and assembly quality of the differential housing.

[0004] In terms of positioning, traditional tooling typically uses simple locating pins. While this method can achieve workpiece positioning to some extent, its accuracy is limited and cannot meet the demands of high-precision machining. As the automotive industry's requirements for component machining precision continue to increase, this simple positioning method has become one of the key factors restricting the improvement of differential housing machining quality. Furthermore, traditional tooling lacks an integrated design concept; each machining stage is independent and lacks effective coordination and integration, failing to achieve a unified process from roughing to finishing, further limiting the improvement of machining efficiency and accuracy.

[0005] Furthermore, traditional machining fixtures lack efficient collaborative control mechanisms when working with other machining equipment. Throughout the machining process, the connections between different steps are not smooth, often requiring frequent manual intervention. For example, when transferring a workpiece from one machining device to another, manual clamping, positioning, and adjustment of equipment parameters are necessary. This highly manual machining mode not only increases labor costs but also easily introduces human error due to the subjectivity and uncertainty of manual operation. The introduction of human error directly affects the machining quality of the differential housing, leading to unstable machining accuracy and a high scrap rate. Simultaneously, multiple clamping and tooling changes make the production process cumbersome, inefficient, and unable to meet the demands of large-scale production. Utility Model Content

[0006] In view of the above situation and to overcome the defects of the prior art, this utility model provides a differential housing precision acceleration control all-dimensional integrated device. This design effectively solves the problem that conventional differential housing precision acceleration control all-dimensional integrated devices are difficult to accurately control the processing speed and accuracy during the processing, resulting in low factory production efficiency and product quality.

[0007] To achieve the above objectives, this utility model provides the following technical solution: This utility model includes a double-shell positioning frame and a four-axis fixing frame. The double-shell positioning frame includes an upper support plate, a middle plate and a lower base plate are fixedly connected below the upper support plate, a left half-shell mounting flange is fixedly connected inside the upper support plate on one side of the middle plate, a movable support plate is provided below the left half-shell mounting flange, and the movable support plate and the left half-shell mounting flange are used to fix the left half-shell of the differential. A right half-shell mounting flange is provided on the upper support plate on the other side of the middle plate, and a clamping assembly is provided on the side of the right half-shell mounting flange, and the clamping assembly and the right half-shell mounting flange are used to fix the right half-shell of the differential. The four-axis fixing frame includes a four-axis turntable, and the four-axis turntable is provided with claws for fixing the entire differential.

[0008] Preferably, the movable pallet is provided with a guide groove for the left half shell to slide, the movable pallet is provided with a first positioning block on the side, the first positioning block is fixedly connected to the upper pallet, the movable pallet is provided with a telescopic cylinder below, the telescopic cylinder is fixedly connected with a support base below, and the support base is fixedly connected to the lower base plate.

[0009] Preferably, the clamping assembly includes a rotary cylinder, on which a lifting pressure rod is rotatably connected, and on which a pressure head is fixedly connected, the pressure head being located above the right half-shell flange, and a second positioning block being provided below the right half-shell flange, the second positioning block being fixedly connected to the lower base plate.

[0010] Preferably, two symmetrically distributed support plates are fixedly connected between the lower base plate and the upper support plate, and reinforcing ribs are fixedly connected to the outer side of the support plates.

[0011] Preferably, a chuck is fixedly connected to the front side of the four-axis rotary table, and there are three sets of jaws. The three sets of jaws are distributed at equal angles on the chuck, and the jaws are slidably connected to the chuck.

[0012] Preferably, a fixing plate is fixedly connected to the four-axis rotary table, a screw is threadedly connected to the fixing plate, a clamping cylinder is fixedly connected below the screw, an air pipe connector is fixedly connected to the clamping cylinder, and a fixing seat is provided between the clamping cylinder and the four-axis rotary table.

[0013] Compared with the prior art, the outstanding advantages of this utility model are:

[0014] This invention improves the machining accuracy of the differential housing by using the synergistic effect of the double-shell positioning frame and the four-axis fixing frame, effectively reducing the scrap rate and improving product quality. The left and right halves of the housing can complete multiple processes in one clamping of the double-shell positioning frame, reducing clamping and tool changing time, improving production efficiency, and meeting the needs of large-scale production. At the same time, the improved machining accuracy and production efficiency also indirectly reduce the production costs of manpower and materials. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the first axial side structure of the double-shell positioning frame of this utility model.

[0016] Figure 2 This is a schematic diagram of the second axial side structure of the double-shell positioning frame of this utility model.

[0017] Figure 3 This is a schematic diagram of the upper support plate connection structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the structure below the upper support plate of this utility model.

[0019] Figure 5 This is a schematic diagram of the first axial side structure of the four-axis fixing bracket of this utility model.

[0020] Figure 6 This is a schematic diagram of the second axial side structure of the four-axis fixing bracket of this utility model.

[0021] The diagram is labeled as follows: 1. Double-shell positioning frame; 101. Upper support plate; 102. Middle plate; 103. Lower base plate; 104. Left half-shell mounting flange; 105. Moving support plate; 106. Right half-shell mounting flange; 107. Clamping assembly; 1071. Rotary cylinder; 1072. Lifting pressure bar; 1073. Pressure head; 1074. Second positioning block; 108. Guide groove; 109. First positioning block; 110. Telescopic cylinder; 111. Support base; 112. Support plate; 113. Reinforcing rib; 2. Four-axis fixing frame; 201. Four-axis turntable; 202. Claw; 203. Chuck; 204. Fixing plate; 205. Screw; 206. Clamping cylinder; 207. Air pipe connector. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see the appendix Figure 1-6 This embodiment discloses a differential housing precision acceleration control all-dimensional integrated device, comprising a double-shell positioning frame 1 and a four-axis fixing frame 2. The double-shell positioning frame 1 includes an upper support plate 101, with a middle plate 102 and a lower base plate 103 fixedly connected below the upper support plate 101. A left half-shell mounting flange 104 is fixedly connected inside the upper support plate 101 on one side of the middle plate 102. A movable support plate 105 is provided below the left half-shell mounting flange 104, and the movable support plate 105 and the left half-shell mounting flange 104 are used to fix the left half-shell of the differential. A right half-shell mounting flange 106 is provided on the upper support plate 101 on the other side of the middle plate 102. A clamping assembly 107 is provided on the side of the right half-shell mounting flange 106, and the clamping assembly 107 and the right half-shell mounting flange 106 are used to fix the right half-shell of the differential. The four-axis fixing frame 2 includes a four-axis turntable 201, and a claw 202 for fixing the entire differential is provided on the four-axis turntable 201.

[0024] The device is equipped with two pneumatic unit control systems, one for the double-shell positioning frame 1 and the other for the four-axis fixed frame 2. The upper support plate 101 on the double-shell positioning frame 1 is horizontally set as a reference platform for machining the left and right half-shells. The middle plate 102 is fixed below the upper support plate 101 and connected to the lower base plate 103 by vertical bolts to form a stable frame structure. The middle plate 102 is located in the middle position below the upper support plate 101. The left half-shell mounting flange 104 is fixed inside the upper support plate 101 on the left side of the middle plate 102. The end face of the left half-shell mounting flange 104 is provided with a positioning pin hole for matching the mounting hole of the left half-shell of the differential. The movable support plate 105 is located below the left half-shell mounting flange 104. The guide groove 108 in the movable support plate 105 is used for support. The left half of the differential is transported and connected to a telescopic cylinder 110 below it, which is used to drive the vertical lifting and lowering of the left half of the differential. The telescopic cylinder 110 presses the left half of the differential upward and fixes it below the left half of the differential mounting flange 104. The right half of the differential mounting flange 106 is set on the upper support plate 101 on the right side of the middle plate 102. The rotary cylinder 1071, lifting pressure rod 1072 and pressure head 1073 in the clamping assembly 107 are used to apply a vertical downward clamping force to the right half of the differential. After processing, the left and right half of the differential are fixed together by bolts. The clamps in the four-axis fixing bracket 2 fix the entire differential housing after it is fastened. The four-axis turntable 201 integrates the A-axis (rotary axis) and the XYZ three-axis moving platform, which is used to drive the overall multi-angle positioning of the differential.

[0025] The guide groove 108 inside the movable pallet 105 is located on the upper end face of the movable pallet 105. A linear guide rail is embedded in the guide groove 108. The left half shell slides with the guide rail through a slider to ensure accurate movement direction. A first positioning hole is provided along the direction of the linear guide rail. The first positioning block 109 is fixed on the side of the upper pallet 101 to limit the horizontal position of the left half shell and ensure the coaxiality of the left half shell and the left half shell mounting flange 104 to ensure subsequent processing accuracy. Furthermore, the cylinder body of the telescopic cylinder 110 is fixed on the support base 111, and the piston rod is hinged to the bottom of the movable pallet 105. The left half shell is lifted and lowered by the extension and retraction of the cylinder, and the stroke range is adapted to the clamping requirements of workpieces of different sizes.

[0026] There are three sets of rotary cylinder 1071, lifting rod 1072, and pressure head 1073, and the three sets of clamping components 107 are distributed at equal angles on the right half shell mounting flange 106. Rotary cylinder 1071 controls the rotation of lifting rod 1072. Lifting rod 1072 can move vertically relative to rotary cylinder 1071. When installing the right half shell, the rotary cylinder 1071 rotates the lifting rod 1072 outward, which makes it easy to rotate it onto the right half shell mounting flange 106 to place the right half shell. Then the lifting rod 1072 is rotated back. The vertical movement of the lifting rod 1072 drives the pressure head 1073 to press down or loosen up to fix the right half shell. The second positioning block 1074 is fixed on the lower base plate 103 and cooperates with the positioning pin of the right half shell mounting flange 106 to limit the circumferential displacement of the right half shell.

[0027] Two support plates 112 are symmetrically distributed between the lower base plate 103 and the upper support plate 101. They are made of high-strength steel plates and welded together to ensure the rigidity of the overall frame. The reinforcing ribs 113 are welded to the outside of the support plates 112 and are distributed in a triangular shape to resist vibration loads during processing and prevent the frame from deforming.

[0028] The structure of the clamping cylinder 206, the jaws 202, and the chuck 203 is similar to that of the three-jaw chuck 203. Each set of jaws 202 has a V-groove at the end to fit the cylindrical surface of the differential housing. The clamping cylinder 206 is connected to an external air source through the air pipe connector 207. The air pressure drives the piston rod to push the jaws 202 to move radially in sync. The clamping force is adjustable. The screw 205 is threaded with the fixing plate 204. The installation height of the clamping cylinder 206 can be finely adjusted by manual rotation to adapt to the center height of different specifications of differentials.

[0029] The overall workflow of this utility model:

[0030] Left half shell clamping: Place the left half shell in the guide groove 108 of the movable pallet 105, push it to the limit of the first positioning block 109, start the telescopic cylinder 110, drive the movable pallet 105 to rise, so that the left half shell is aligned with the positioning pin of the left half shell mounting flange 104 and locked.

[0031] Right half shell clamping: Place the right half shell on the right half shell mounting flange 106, correct the position by the second positioning block 1074, and control the rotary cylinder 1071 to drive the pressure head 1073 to press down until the right half shell is completely in contact with the flange.

[0032] Differential assembly: The assembled differential is moved to the center of the chuck 203 of the four-axis rotary table 201. The three sets of jaws 202 are driven by the clamping cylinder 206 to clamp synchronously. The four-axis rotary table 201 is started to adjust the spatial attitude of the differential and perform precision machining or inspection operations.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A differential housing fine acceleration control full-dimensional integrated device, characterized by: The system includes a double-shell positioning frame (1) and a four-axis fixing frame (2). The double-shell positioning frame (1) includes an upper support plate (101). An intermediate plate (102) and a lower base plate (103) are fixedly connected below the upper support plate (101). A left half-shell mounting flange (104) is fixedly connected inside the upper support plate (101) on one side of the intermediate plate (102). A movable support plate (105) is provided below the left half-shell mounting flange (104). The movable support plate (105) and the left half-shell mounting flange (104) are connected... The middle plate (102) is used to fix the left half of the differential. The upper support plate (101) on the other side of the middle plate (102) is provided with a right half of the housing mounting flange (106). The right half of the housing mounting flange (106) is provided with a clamping assembly (107) on its side. The clamping assembly (107) and the right half of the housing mounting flange (106) are used to fix the right half of the differential. The four-axis mounting bracket (2) includes a four-axis turntable (201). The four-axis turntable (201) is provided with a claw (202) for fixing the entire differential.

2. The differential case fine acceleration control full-dimensional integrated device according to claim 1, characterized by: The movable pallet (105) is provided with a guide groove (108) for sliding the left half shell. The movable pallet (105) is provided with a first positioning block (109) on its side. The first positioning block (109) is fixedly connected to the upper pallet (101). The movable pallet (105) is provided with a telescopic cylinder (110) below it. A support base (111) is fixedly connected below the telescopic cylinder (110). The support base (111) is fixedly connected to the lower base plate (103).

3. The differential case fine acceleration control full-dimensional integrated device of claim 1, wherein: The clamping assembly (107) includes a rotary cylinder (1071), on which a lifting pressure rod (1072) is rotatably connected. A pressure head (1073) is fixedly connected to the lifting pressure rod (1072). The pressure head (1073) is located above the right half-shell flange. A second positioning block (1074) is provided below the right half-shell flange. The second positioning block (1074) is fixedly connected to the lower base plate (103).

4. The differential case fine acceleration control full-dimensional integrated device of claim 1, wherein: Two symmetrically distributed support plates (112) are fixedly connected between the lower base plate (103) and the upper support plate (101), and the outer side of the support plate (112) is fixedly connected with reinforcing ribs (113).

5. The differential case fine acceleration control full-dimensional integrated device of claim 1, wherein: The four-axis rotary table (201) is fixedly connected to a chuck (203) on the front side. There are three sets of jaws (202), and the three sets of jaws (202) are distributed at equal angles on the chuck (203). The jaws (202) are slidably connected to the chuck (203).

6. The differential case fine acceleration control full-dimensional integrated device according to claim 1 or 5, characterized by: A fixed plate (204) is fixedly connected to the four-axis rotary table (201). A screw (205) is threadedly connected to the fixed plate (204). A clamping cylinder (206) is fixedly connected below the screw (205). An air pipe connector (207) is fixedly connected to the clamping cylinder (206). A fixed seat is provided between the clamping cylinder (206) and the four-axis rotary table (201).

Images